Address-printing machine



July 31, 1934. J. KRELL ADDRESS PRINTING IACHINE Filed Jan. :50. 1931 sShee ts-Sheet 1 lnvenror y 6 LL Atty July 31, 1934- KRELL 1,968,153

ADDRESS PRINTING I ACflINB Filed Jan. 30, 1931 s sheets-sheet 2 YJII'G WHys.

July 31, 1934.

J. KRELL ADDRESS PRINTING IACHINB Filed Jan. 30. 1931 6 Sheets-Sheet 3 y1934- J. KREL L 1,968,153

ADDRESS PRINTING ucnms Filed Jan. 30, 1931 6 Sheets-Sheet 4 By JJIIZC?ll ADDRESS PRINTING nonma- Filed Jan. 30, 1931 G-Sheets-Sheet 5 July 31,1934. J. KRELL ADDRESS PRINTING IACHINE Filed Jan. 50,- 1951 sSheets-Sheet s Patented July 31, 1934 UNITED STATES PATENT OFFICEApplicationJanuary 30, 1931, Serial No. 512,423

In Germany February 11, 1930 12 Claims.

My invention relates to address-printing machines having a printingmechanism and means which will be referred to as the selector, forcontrolling the printing mechanism so that it will print certainprinting plates, and skip others.

It is an object of my invention to so design a machine of the typereferred to that its printing plates need not be equipped with meanssuch as projections, for effecting the said control, but that suchcontrol is exclusively effected by a member which will be referred to asthe control chart, and will be shown as a perforated strip of cardboardsecured to a cylinder of the selector, but I am not limited to thecombination of such a strip with a cylinder.

With the object of my invention in view, combine with the selector ascanning memb which is operatively connected to the selector so as to beunder the control of the chart on the selector. The scanning member, inturn, controls the printing mechanism for printing and skipping, andmeans are provided for imparting intermittent relative movement to thechart and the scanning member in time with the operation of the printingmechanism. The movement-imparting means is operatively connected to theprinting mechanism.

Address-printing machines having skipping means for selecting certainprinting plates as they move through the machine, and mechanical orelectric means for controlling the skipping means, are old.

It is also old in a machine of this type to control the skipping meansthrough the medium of a perforated control chart but in this machine theprinting plates are equipped with the means referred to, such asprojections, tags, holes, etc. and only those printing plates will beprinted which are marked on the chart by perforations in conformity withtheir means.

By dispensing with the said means on the printing plates, I may performoperations which are impracticable in the old machines. Assume, by wayof example, that the printing plates bear the addresses of persons orfirms bound to effect certain payments on certain dates. In this casethe payments effected in time are marked on the chart, and when the timehas elapsed the addresses of all those persons who are in arrears, willbe printed by means of their plates. It is not necessary to make anyalterations at the printing plates themselves, nor to pick out of theplate pile the plates of those who have paid in time. During eachfeeding of the printing plates through the machine other printing plateswill be printed in conformity with the chart which is on the selector,without any distinctions on the plates.

It will be understood that while in the old machines the printing platesthemselves control the skipping means in my machine the skipping meansare controlled exclusively by the chart.

. In the selector of my machine each mark, perforation or the like, onthe chart corresponds to a printing plate which will arrive at theprinting station at a given time. The selection of the printing platesthrough the medium of the chart may be effected mechanically orelectrically, preferably byelectromagnets. The selector is oper-' "ed inconformity with the sequence of the plates be printed.

Electromagnetic means are preferred on account of their simplicity. In aselector of this type the chart is a perforated strip on a support ofconducting material which is connected to one terminal of a source ofcurrent. The scanning member referred to is adapted to engage thesupport through the holes in the chart and is connected to the otherterminal. In the circuit which is opened and closed by the scanningmember under the control of the perforated chart, I provide anelectromagnet which when excited by the contacting member engaging thesupport through one of the perforations in the chart, operates a switchin the circuit of the controlling magnet for the skipping means.

I shall describe a selector in which the support is a rotary drum butthe chart may also be secured on a fixed support and the scanning membermay be moved along the chart in a sinusoidal path by the mechanism ofthe machine, or the member may be fixed while the support with the chartis moved line per line below the member first in a given direction, andthen at right angles thereto. The support in these cases may be flat. Ifit is a drum it is fed intermittently by the mechanism of the machine,and the scanning member is moved through the pitchof the rows of holesin the chart in the axial direction of the drum after each completerotation of the cylinder.

Preferably the switch connected to the circuit of the controlling magnetfor the skipping means, and controlled by the electromagnet of theselector, is a double switch for closed-circuit current and for currentat making.

My selector may also be applied to a machine of the old type referred toin'which the selector is controlled by means on the printing plates, andthe two controls may be combined for alternating operation, or foroperation independently or in dependence of each other.

In the accompanying drawings a machine equipped with a selector drum isillustrated by way of example.

In the drawings Fig. 1 is a perspective illustration showing the tableof the machine,

Fig. 2 is an elevation of its selector drum, drawn to a larger scale,

Fig. 3 is an end elevation of the drum, viewed in the direction of arrowIII at the right in Fig. 2,

Fig. 4 is a plan view of the cylinder,

Fig. 5 is a detail elevation viewed as in Fig. 3 but in anotherposition,

Fig. 6 is a section on the line VIVI in Fig. 2,

Figs. 7, 8, and 9 are details of the cylinder-feeding mechanism,

Figs. 10 to 13 are diagrams of connections, and

Fig. 14 shows a portion of a control chart.

Referring now to the drawings, and first to Fig. 1, 2 is the table ofthe machine, on suitable standards 1, and A is the selector which willbe described in full detail below. 3 is a cage for a pile of printingplates 8, 4 is a track, 5 is a feed slide in the track, and 6 is a rodconnecting the slide to a rocking lever 7 to which movement is impartedfrom the drive of the machine by any suitable means, not shown, and 18is a plate for locking the lever 7 against movement, for a purpose whichwill be described.

9 is the printing station, and 10 is the printing arm which is mountedto rock about a pin on the table 2, and is connected to the drivingmeans for the lever 7, as indicated in dotted lines. The means forfeeding the printing plates 8, and for rocking the printing arm, form nopart of the present invention and therefore have only been showndiagrammatically, and not in full detail.

13 is a boss at the free end of the printing arm, 11 is a printingplaten, 14 is the control electromagnet referred to which, if excited,permits the plates to be printed and, if deenergized, permits them to beskipped, 15 is its armature, and 16 is a rocking lever on the printingarm the lower end of which is under the control of the armature 15 whileits upper end is connected to the printing platen 11 by means includingthe link shown above the arm 10, for advancing the platen 11 andprinting the plate which is at the station, if the control magnet 14attracts its armature l5 and the armature engages the lower end of therocking lever 16. If the control magnet is not excited it does notattract its armature, the platen 11 is not advanced and the plate whichis at the station, is skipped. 17 is a switch in the circuit of thecontrol electromagnet 14, and Figs. 7 and 8 show that the switch isunder the control of a tail 10 depending from the printing arm 10, andthat the switch is open both in the upper and lower final positions ofthe arm 10. The control magnet 14 is excited when a printing plate is inthe position 9, Fig. 1, in advance of the station 9.

When the control magnet 14 is excited it attracts its armature 15 andmoves it into the way of the lower end of lever 16, so that the platen11 is moved into printing position.

If desired, a given plate may be printed repeatedly by moving lockingplate 18, Fig. 1, into the way of the rocking lever 7 so that the feedslide 5 is prevented from performing its return movement in thedirection of the arrow 19, the feed is arrested, and the plate at thestation is printed over again until the plate 18 is retracted.

Referring now to Figs. 3 to 6, 21 is the drum or rotary cylinder of theselector A which is mounted in a, preferably detachable, bracket 20 onthe table 2. The surface 21' of the drum or rotary cylinder is ofconducting material and provided with a slip ring 23 at its left end,Figs. 2 and 4, to which current is supplied by a cable 24 and acontacting member 22.

The means for intermittently feeding the cy1- inder 21 include a beam29, Fig. 3, on a pivot 28 in the bracket 20 at the right, a ratchetwheel 25 on the shaft of the cylinder 21, two pawls 26 and 27, a spring30 which is attached to one end of the beam 29 with its upper end, andsecured to the bracket 20 at its lower end 20', and a Bowden cable 72which as shown in dotted lines in Fig. 1, is attached to the rockinglever 7 at one end, and to the beam 29 at the other.

The Bowden cable 72 may also be connected to the printing arm 10 asshown in full lines in Fig. 1, and in detail in Figs. 7 to 9. Here, thefree end of the Bowden cable is connected to the lower end of a handle73 which is pivoted at 74 in an upright 75 on the table 2. 76 is a rodwhich may be divided into two members 76 76 for exact adjustment andwith one of its slotted members engages a pin 77 on the printing arm. 78is a hook on the rod which may be moved so as to engage the pin 77.

As often as the lever 7 rocks against its arrow, or as often as theprinting arm 10 is raised, the cable 72 is pulled and puts tension onthe spring 30 while movement of the lever or arm in the oppositedirection causes the spring to contract so that it will pull down theend of the beam to which it is attached. By these means, the cylinder isfed through a given distance in the direction of arrow 31, Fig. 3.

When it is desired to return the cylinder 21 into its initial positionthe hook 78, Figs. 7 to 9, is detached from the pin 77 so that thehandle 73 may be rocked by hand. However, the cylinder may also be movedinto its initial position by handling it directly instead of the cable72 and the handle 73.

Instead of being operated from the lever 7 the cable 72 might beoperated from the slide 5, or by means connected to the slide.Connection to the drive is preferable in a machine with multipleprinting means but care must be taken that the cylinder 21 is only fedif a new plate is at the printing station 9. As often as the slide 5 isadvanced, that is, moved against arrow 19, which corresponds to upwardmovement of the printing arm 10, tension is put on the spring 30 bycable 72.

32, Fig. 4, are pins arranged in a row in parallel to the axis ofcylinder 21 for holding thereon a control chart 33 such as shown by wayof exam ple in Fig. 14. 34 are holes or perforations in the chart. Ithas been assumed that the chart is so wide as to receive 100 holes in arow, and so long that it has room for 20 to 30 rows. In all, 2000 to3000 holes may be made in such a chart. The chart may be lined as shown,or plain. 32' are rows of holes at the edges of the chart for securingthe chart on the pins 32, with its ends 33' overlapping. 35 is astraight-edge of insulating material which is perforated for thereception of the pins 32, placed on the overlapping ends 33, and held byhinged clips 36, which if rotated in the direction of arrow 37, Fig. 6,release the straight-edge 35.

38 is a scanning member at the end of a slide which is mounted to slide39 on a rod 41 in front of cylinder 21 and resembles the tabulator lockof a type-writing machine. The slide moves on the rod with two bushes40. Secured to, or integral with, the slide is an arm 38' to the end ofwhich the'member 38 issecured. 39 are bearing bosses at the lower end ofthe body 39, 42 is a shaft in the bosses, as best seen in Fig. 5, and 43is a lock plate, with two locking teeth 50 and 51, Fig. 2, pitched at anangle of 90 degs., which is mounted on shaft 42 and recessed for thereception of a ratchet wheel 52. The ratchet wheel 52 is mounted torotate on a pin 53 projecting from the body 39. 54 is a spur gear at therear of the ratchet wheel 52, and 56 is a rack secured to the bracket 20in parallel relation to rod 41 with which the gear 54 is meshing. 60 isa spring casing from which a band or the like 59 extends to the slide39. The spring in the casing pulls the slide 39 to the right, arrow 61in Fig. 2.

46, 4'7 are the two arms of a lever which is mounted to rock on theslide at 48, Fig. 5, with its upper, hook-shaped end 49 extending intothe vicinity of member 38. 45 is a stay by which the lower end of thelever arm 46 is connected to a downward extension 44 of lock plate 43.

The arm 38 is of insulating material and the lower end of member 38 isin contact with a conducting rail 58 at 37, Fig. 5, which rail issecured to the lower edge of rack 56, with an insulating strip 57interposed. 62 is a cable connecting the rail 58 to an electromagnet 63,Fig. 4, from which a cable 64 extends to one of the contacts of switch1'7, as shown in Fig. 10. 65 is the armature of electromagnet 63 whichcontrols a double switch. The double switch has three members. Itscentral member 66 is connected to the plus wire of an electric system,as shown in Fig. 10. The two springs 67 and 68 at the sides of thecentral member 66 are connected, respectively, to plug contacts 70 and69. The armature 65 has a cam at its free end, Fig. 4, by which itengages the free end of central member 66. When the electromagnet 63 isdeenergized as shown in Fig. 4, the cam at its free end releases thecentral member or spring 66 which now makes contact at 6'7. When theelectromagnet is energized it attracts its armature whose cam pushes thecentral member 66 to the right, causing it to engage spring 68 and torelease spring 6'7.

The slide 39 is held against displacement on the rod 41 while the tooth51 is engaged in the ratchet wheel 52, and while the arm 47 with itshook 49 bears on the chart 33. When it is raised from the chart by thestraight-edge 35 as shown in Fig. 5, the lock plate 43 is rocked aboutits shaft 42, and the tooth 51 is disengaged from the ratchet wheel 52.At the same time the tooth 50 is moved into locking position withrespect to the ratchet wheel 52. Under the pull of the band 59, theratchet wheel 52 rotates through half its pitch. when the hook 4'1 comesoff the straight-edge the lock plate 43 returns into its initialposition, in which the tooth 50 is out of, and the tooth 51 is in mesh,with the ratchet wheel 52. The ratchet wheel has now rotated through onepitch and the slide has been displaced for the pitch of two rows ofholes 34.

Referring now to Fig. 10, the wire is connected to the wire 24 and thecontacting member 23 at the left of cylinder 21, and the wire isconnected to one terminal of switch 17. The other terminal of the switchis connected to one end of electromagnet 63 through wire 64. Spring 67of the double switch illustrated in detail in Fig. 4, as mentioned, isconnected to the plug contact 70, and spring 68 to the other plugcontact 69; 71 is a wire which is adapted'to be connected to plugcontacts 70 or 69 at one end, and its other end is connected to thecontrol magnet 14.

If the wire '71 is connected to plug contact 69 as shown the system isoperated by current at making. As often as the cylinder 21 closes thecircuit of the electromagnet 63 by the scanning member 38 engaging thesurface 21' of the cylinder through a hole in the chart 33, the armature65 of the electromagnet '63 is attracted and pushes the central memberor spring 66 to the right so that it engages the spring 68 and theskipping magnet 14 will be energized as soon as the printing arm 10closes the switch 17.

Assume now that 1, Fig.2, is the first row of holes in parallel to theaxis of cylinder 21. Assume further that the machine is of the type thecontrol magnet 14 of which must be excited when the printing plate movesfrom 9' to the printing 7 station 9.

Move slide 39 to the left as far as it will go, and turn cylinder 21until member 38 engages the straight-edge 35 at .r". The hook 49 on arm47 engages in front of 35, and the selector is in its initial position.When the printing arm 10 descends for the first time the printing plateremains at 9' but the cylinder 21 is rotated through one pitch in thedirection of arrow 31, Fig. 3. The straight-edge 35 now raises the hook49 and drops it at its rear, moving the slide 39 to the right throughone pitch. The hole 34 at 1 in the first row is now engaged by thecontacting member 38, 63 is energized, the double switch is closed by 66and 68 but the switch 17 is still open. The cylinder remains in itsposition until the following descent of the printing arm 10, so that,when upon the next ascent of the printing arm the switch 17 is closedthe control magnet 14 the circuit of which has been prepared at 66, 68,is energized and this has the consequence that the printing plate movingas far as the station 9 is printed. When the printing arm 10 hascompleted its descent the switch 17 is opened againand the controlmagnet deenergized which,

the contacting member 38. If, as shown, there is no hole 34 in thesecond row the control magnet 14 is not energized notwithstanding theclosing of its circuit at 1'7 by the printing arm because the doubleswitch is open at 66, 68. The second plate is not printed.

In order to ascertain the synchronism of the cylinder 21 with the motionof the printing plates, proceed as follows:

After the cylinder 21 has been rotated until the scanning member 38 isin line with the last hole in the first row, that is, with, say, hundredholes per row, in line with hole ,100, and the printing plate has beenprinted if there is a hole 34 at this point, or skipped, if there is nosuch hole, turning the cylinder through one more pitch causes thescanning member 38 to-be again above the straight-edge 35. To ascertainthe synchronism in these positions, a so-called group plate is insertedafter each hundredth normal printing plate, which is without types andwhen it arrives at the station 9 the machine is arrested in knownmanner. In the position of the cylinder as defined the group plate movesto the station and the machine stops. The operator should ascertain thatin fact the hundredth and first or group plate coincides with theposition of scanning member 38 on straightFedge 35 and that, when nowthe next or hundredth and first normal plate arrives at the station 9the cylinder is so positioned as to move the hole 34 at 101" into activeposition.

After the drive of the machine has been restarted the slide 39 is movedto the right through one more pitch and the scanning member engages atthe first hole 101 of the second row whereupon plates 101 to 200 movethrough the machine and it is again arrested. This is repeated for allrows of holes in the chart 33 and until the printing plate correspondingto the last hole has moved past the printing station 9. The machine isnow arrested and anew pile of printing plates inserted.

The operation is quite the same if the cylinder 21 is operated from thelever '7 and if it is operated from the rod of slide 5, only in thelatter case the cylinder is fed only when a new printing plate moves tothe station 9, as required if the printing plates are held at theprinting station for repeated printing.

The machine may also be started by adJusting the first station of thechart in line with the scanning member 38 initially which station orhole does not correspond to any printing plate.

Operating with current at make as described is suitable if it isintended, for instance, to send advertisements to customers who haveeffected certain purchases at a given time or at a given shop, asindicated by the perforations on the chart.

If it is desired to operate with closed-circu1t current, the wire 71 isconnected at '70, as shown in dotted lines in Fig. 10. The operation lSthe same as described, with the exception that, as soon as the scanningmember 38 enters a hole in the chart 33 the circuit of magnet 14 isopened, that is, all printing plates are printed the stations of whichare not perforated on the chart while all those having perforatedstations, are skipped. In this case the switch 66, 67 is normallyclosed, and opened as often as the electromagnet 63 is excited, througharmature 65.

The operation with closed-circuit current is suitable, for instance, ifit is desired to send reminders to customers in arrears with theirpayments, all effected payments being marked by holes 34 in the chart.To prevent printing of the group plate the straight-edge 35 ispreferably made of conducting and not of insulating mal lz rnentioned itis possible to combine with my selector means for selecting printingplates through the medium of marks, for instance, projections. Diagramsof such machines are shown in Figs. 11 to 13.

The diagrams correspond to Fig. 10, except for the alterations involvedby the combination.

Referring to Fig. 11, a, b, c, d, e, f are selector switches, and a, b,c, d, e, and are press buttons in the circuits of the switches. Thecircuits of the switches and press buttons are connected in parallel tothe selector system. Cutout switches and 81 are preferably provided inthe wire and the wire 64 in order to cut out the cylinder 21 altogether.

If buttons b and d are operated those plates will be printed the marksof which correspond to the selector switches b, d, the selectors beingclosed as these plates are fed and the skipping magnet 14 is excited,even if the cylinder 21 would not cause these plates to be printed.

Such a system is preferred, for instance, if except the persons noteddown by perforations in the chart 33, there are other persons or groupsto whom certain matter is to be addressed.

Referring to Fig. 12, the selector circuits are connected between theplug contact 69 or 70 and the magnet 14. Here the magnet 14 will only beexcited if not only the contacts 66, 67, or 66, 68, as the case may be,are closed by the cylinder 21, but also not less than one of theselector circuits is closed. With the system Fig. 12, for inst. it ispracticable to print out of plates marked as belonging to a certaingroup, only those in which also the selector cylinder 21 permits theprinting.

Referring to Fig. 13, the selector circuits, are connected in parallelto the circuits through cylinder 21 and contacting member 38 so thatelectromagnet 63 is excited not only by closing of its circuit by thechart 33 on cylinder 21 but also one of the selector circuits is closed.Here, for instance, the plates of a definite group may be excluded fromprinting although the cylinder 21 would permit printing.

I claim:

1. In an address-printing machine, a support of electrically conductingmaterial, means for securing a perforated control chart to said support,a scanning device including a contacting member which is adapted to makecontact with said support through the holes in said perforated controlchart, a control magnet, a circuit connecting said magnet to saidcontacting member and to said support, so as to be made when saidcontacting member engages said support through a hole in said chart, andmeans under the control, respectively, of the printing mechanism of themachine and said support, for imparting relative'movement in twodirections transversely to each other to said support and to saidscanning device.

2. In an address-printing machine, a drum of electrically conductingmaterial, means for securing a perforated control chart to said drum, ascanning device including a contacting member which is adapted to makecontact with said drum through the holes in said perforated controlchart, a control magnet, a circuit connecting said magnet to saidcontacting member and to said drum, so as to be made when saidcontacting member engages said drum through a hole in said chart, andmeans under the control, respectively, of the printing mechanism of themachine and of said drum, for imparting intermittent rotary move ment tosaid drum, and for intermittently moving said scanning device along saiddrum.

3. In an address-printing machine, a drum of electrically conductingmaterial, means for securing a perforated control chart to said drum, ascanning device including a contacting member which is adapted to makecontact with said drum through the holes in said perforated controlchart, a control magnet, a circuit connecting said magnet to saidcontacting member and to said drum, so as to be made when saidcontacting member engages said drum through a hole in said chart, andmeans under the control, respectively, of the printing mechanism of themachine and of said chart-securing means on said drum, for impartingintermittent rotary movement to said drum, and for intermittently movingsaid scanning de vice along said drum.

4. In an address-printing machine, a drum of electrically conductingmaterial, means for securing a perforated control chart whose stationsfor placing perforations are arranged in rows, to said drum, a scanningdevice including a contacting member which is adapted to make contactwith said drum through the holes in said perforated control chart, acontrol magnet, a circuit connecting said magnet to said contactingmember and to said drum, so as to be made when said contacting memberengages said drum through a hole in said chart, means under the controlof the printing mechanism of the machine for intermittently rotatingsaid drum through the pitch of two rows extending in parallel to itsaxis, and means under the control of said drum for moving said scanningdevice through the pitch of two rows extending at right angles to itsaxis, after said drum has performed a complete revolution.

5. In an address-printing machine, a drum of electrically conductingmaterial, means for securing a perforated control chart to said drum, ascanning device including a contacting member which is adapted to makecontact with said drum through the holes in said perforated controlchart, a tabulator lock connected to said scanning device, a controlmagnet, a circuit connecting said magnet to said contacting member andto said drum, so as to be made when said contacting member engages saiddrum through a hole in said chart, means under the control of theprinting mechanism of the machine for imparting intermittent rotarymovement to said drum, means for pulling said lock and said scanningdevice along said drum, and means controlled by said drum for lockingand releasing said tabulator lock.

6. In an address-printing machine, a drum of electrically conductingmaterial, means for securing a perforated control chart to said drum, ascanning device including a contacting member which is adapted to makecontact with said drum through the holes in said perforated controlchart, a control magnet, a circuit connecting said magnet to saidcontacting member and to said dnim, so as to be made when saidcontacting member engages said drum through a hole in said chart, meansunder the control of the printing mechanism of the machine and includinga pawl-andratchet mechanism and a pull-back spring; for impartingintermittent rotary movement to said drum, and means controlled by saiddrum for intermittently moving said scanning device along said drum.

7. In an address-printing machine, a drum of electrically conductingmaterial, means for securing a perforated control chart to'said drum, ascanning device including a contacting member which is adapted to makecontact with said drum through the holes in said perforated controlchart, a control magnet, a circuit connecting said magnet to saidcontacting member and to said drum, so as to be made when saidcontacting member engages said drum through a hole in said chart, meansunder the control, respectively, of the printing mechanism of themachine and of said drum, for imparting intermittent'rotary movement tosaid drum, and for intermittently moving said scanning device along saiddrum, a system for supplying current to said circuit, and a doubleswitch connected to said system and said magnet and adapted to becontrolled by said drum.

8. In an address-printing machine, a drum of electrically conductingmaterial, means for securing a perforated control chart to said drum, ascanning device including a contacting member which is adapted to makecontact with said drum through the holes in said perforated controlchart, a control magnet, a circuit connecting said magnet to saidcontacting member and to said drum,

so as to be made when said contacting member engages said drum through ahole in said chart, means under the control, respectively, of theprinting mechanism of the machine and of said drum, for impartingintermittent rotary movement to said drum, and for intermittently movingsaid scanning device along said drum, a system for supplying current tosaid circuit, a double switch connected to said system and said magnet,and an electromagnet adapted to be energized and to operate said doubleswitch when the contacting member of said scanning device makes contact.

9. In an address-printing machine, a drum of electrically conductingmaterial, means for securing a perforated control chart to said drum, ascanning device including a contacting member which is adapted to makecontact with said drum through the holes in said perforated controlchart, a control magnet, a circuit connecting said magnet to saidcontacting member and to said drum, so as to be made when saidcontacting member engages said drum through a hole in said chart, meansunder the control, respectively, of the printing mechanism of themachine and of said drum, for imparting intermittent rotary movement tosaid drum, and for intermittently moving said scanning device along saiddrum, 2. switch in said circuit, and an electromagnet adapted to beenergized and to operate said switch when the contacting member of saidscanning device makes contact.

10. In an address-printing machine, a drum of electrically conductingmaterial, means for securing a perforated control chart to said drum, ascanning device including a contacting member which is adapted to makecontact with said drum through the holes in said perforated controlchart, a control magnet, a circuit connecting said magnet to saidcontacting member and to said drum, so as to be made when saidcontacting member engages said drum through a hole in said chart, meansunder the control, respectively, of the printing mechanism of themachine and of said drum, for imparting interemittent rotary movement tosaid drum, and for intermittently moving said scanning device along saiddrum,

a switch in said circuit which is adapted to operate alternately as aclosed-circuit and as an opencircuit switch, and an electromagnetadapted to be energized and to operate said switch when the contactingmember of said scanning device makes contact.

11. In an address-printing machine, a drum of electrically conductingmaterial, means for securing a perforated control chart to said drum, ascanning device including a contacting member which is adapted to makecontact with said drum through the holes in said perforated controlchart, a control magnet, a circuit connecting said magnet to saidcontacting member and to said drum, so as to be made when saidcontacting member engages said drum through a hole in said chart, meansfor de-energizing said magnet in both final positions of the printingmechanism of the machine, means under the control, respectively, of saidprinting mechanism and of said drum, for imparting intermittent rotarymovement to said drum, and for intermittently moving said scanningdevice along said drum, a switch in said circuit, and and electromagnetadapted to be energized and to operate said switch when the said chart,means under the control, respectively, of the printing mechanism of themachine and of said drum, for imparting intermittent rotary movement ofsaid drum, and for intermittently moving said scanning device along saiddrum, means for throwing out the means under the control of themechanism, a switch in said circuit. and an electromagnet adapted tobeenergized and to operate said switch when the contacting member of saidscanning device makes contact.

JOSEPH KREIL.

